Justin first met Tool in New York, and kept in
touch with band members for a couple of years until Justin's band in England
"Peach", did a tour with Tool in Europe in 1994.

When original bassist Paul D'Amour left, Tool gave Justin a call. At first
Justin turned them down. Peach had broken up about six months before, and he was
forming a new band with the guitarist. Justin felt very loyal to his friend who
he'd played with since he was 14. But then decided he couldn't deny himself the
opportunity. Justin flew to the US, auditioned, and got the job. He beat out
some stiff competition, which included Filter's Frank Cavanagh, KYUSS's Scott
Reeder, Zaum's Marko Fox (who did the voice on Die Eier von Satan), and Pigmy
Love Circus's E. Shepherd Stevenson.

After settling in the US, Justin married Ariadne Chancellor, on top of Mingus
Mountain in Arizona on January 12, 1997.